The Sparta 1 Bold watch winder is compact and lightweight; ideal for use in safes without the need for a plug-in adapter. Equipped with Orbita long-lived lithium D cell batteries operating on the normal ten-minute winding cycle, the batteries will last for many years without the need for replacement. Even longer life may be accomplished by using the 15-minute or extended-winding cycle, which is easily selected using the toggle switch located behind the mounting cup. The Sparta is available in stylish grained faux leather in 6 different colors. If you'd like to see this online item in our Whitefish Bay store or have any questions, please call us at 414-964-1242. Thank you.